Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Optical qubit generation by linear and nonlinear quantum scissors

Adam Miranowicz, Şahin Kaya Özdemir, W. Leoński, Masato Koashi, Nobuyuki Imoto

Published Nov 21, 2003• 2 citations

Abstract

Schemes for preparation of optical qubits represented by any chosen Superposition of number states, in particular the vacuum and single-photon states. arc studied. The schemes enable truncation of an input light to qubit states via linear or nonlinear processes thus are referred to as the linear or nonlinear quantum scissors. The basic propertics of the schemes are discussed.

DOI: 10.1117/12.545072

Related papers

Optical qubit generation by state truncation using an experimentally feasible scheme

Şahin Kaya Özdemir, Adam Miranowicz, Masato Koashi +1 more

Generation of arbitrary superposition of vacuum and one-photon states using a quantum scissors device (QSD) is studied. The device allows the preparation of states by truncating an input coherent light. Optimum values of the intensity of the coherent light for the generation of any desired state using the experimentally feasible QSD scheme are found.

arXiv:quant-ph/0204059Journal of Modern OpticsApr 1, 200213 citations

Quantum-scissors device for optical state truncation: A proposal for practical realization

Şahin Kaya Özdemir, Adam Miranowicz, Masato Koashi +1 more

We propose a realizable experimental scheme to prepare superposition of the vacuum and one-photon states by truncating an input coherent state. The scheme is based on the quantum scissors device proposed by Pegg, Phillips, and Barnett [Phys. Rev. Lett. 81, 1604 (1998)] and uses photon-counting detectors, a single photon source, and linear optical elements. Realistic features of the photon counting and single-photon generation are taken into account and possible error sources are discussed together with their effect on the fidelity and efficiency of the truncation process. Wigner function and phase distribution of the generated states are given and discussed for the evaluation of the proposed scheme.

arXiv:quant-ph/0107048Physical Review ANov 19, 200198 citations

Optical qubit generation by state truncation using an experimentally feasible scheme

Ozdemir, S K, Miranowicz, A, Koashi, M +1 more

Generation of arbitrary superposition of vacuum and one-photon states using quantum scissors device (QSD) is studied. The device allows the preparation of states by truncating an input coherent light. Optimum values of the intensity of the coherent light for the generation of any desired state using the experimentally feasible QSD scheme are found.

Apr 11, 20024 citations

Quantum scissors – finite-dimensional states engineering

A. Kowalewska-kud Laszyk

This work discusses quantum states defined in a finite-dimensional Hilbert space. In particular, after the presentation of some of them and their basic properties the work concentrates on the group of the quantum optical models that can be referred to as quantum optical scissors. Such ”devices” can generate on their outputs states that are finite-dimensional, and simultaneously use for such preparation quantum states that are defined in the infinity-dimensional space. The work concentrates on two groups of models: the first one, comprising linear elements and the second one – models for which optical, Kerr-like nonlinear elements were applied. 1

Aug 16, 201672 citations

Generation of three-qubit entangled W state by nonlinear optical state truncation

R S Said, M R B Wahiddin, B A Umarov

We propose an alternative scheme to generate the W state via optical state truncation using quantum scissors. In particular, these states may be generated through three-mode optical state truncation in a Kerr nonlinear coupler. The more general three-qubit state may also be produced if the system is driven by external classical fields.

arXiv:quant-ph/0607161Journal of Physics B Atomic Molecular and Optical PhysicsFeb 20, 200644 citations

Generation of Three-Qubit Entangled W-State by Nonlinear Optical State Truncation

Said, R S, Wahiddin, M R B, Umarov, B A

We propose an alternative scheme to generate W state via optical state truncation using quantum scissors. In particular, these states may be generated through three-mode optical state truncation in a Kerr nonlinear coupler. The more general three-qubit state may be also produced if the system is driven by external classical fields.

Jul 24, 200631 citations